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为提高苗木的产量和质量,给农桐间作林的营造提供优员壮苗,对兰考泡桐苗木的年生长规律进行了调查,以供参考。一、苗木的年生长:(1)根系的生长;每10天将全部根系调查一次。开始生长平茬苗和营养钵苗在3月末,土堆苗在4月末,但结束生长都在10月末,生长期184天至214天左右。根系的年生长过程(土堆苗)见表1。从表一看出:7—8月根系增长最快,
In order to improve the yield and quality of nursery stock, to provide excellent seedlings for the creation of inter-crop stands, the annual growth of Paulownia elongata seedlings was investigated for reference. First, the annual growth of seedlings: (1) the growth of the root system; every 10 days to investigate all the roots. Beginning to grow stubble seedlings and nutrient bowl seedlings in late March, mound seedlings in late April, but the end of growth in late October, the growing period of 184 days to 214 days or so. Root growth process (mound seedlings) in Table 1. As can be seen from Table 1: The root system grew fastest from July to August,